I have a 2016 3.5 NA. Tonight, I was looking around the truck (I've had problems with spiders of all things) and I saw this "thing" wedged between the frame and another part of the truck near the front left tire. It was not attached to anything, just wedged. After about 5 minutes, I was able to get it loose.

The writing on the handle says Ford FL34-17B74-AA FZG5A PA66 4043 CAV 1

What is this "thing"?

Thanks in advance!